Weyl fermions originate from Dirac states by breaking either time-reversal symmetry or space-inversion symmetry.[1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]} In addition to type-\(\rm {I}\)[3]}, [6]}, [10]} Weyl points with a close point-like Fermi surface, novel type-\(\rm {II}\)[4]}, [11]} Weyl fermions appear at the boundaries between electron and hole pockets violating Lorentz invariance. This results in an open Fermi surface and anisotropic chiral anomaly. Most of the reported type-\(\rm {II}\)  Weyl semimetals exhibit characteristic extraodinary magnetoresistance (XMR), observed for example in materials that crystallize in C2/m space group of OsGe\(_2\) -type structure, such as NbSb\(_2\) , TaAs\(_2\) , and NbAs\(_2\) .[18]}, [19]}
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